mcmillen



@iai-fir tre@ @anni @ffice ARTHURW, McMlLLE-N, OF CHICAGO, ILLINOIS, ASSIGNCR TC'HIMSELF.

' AND ALEXANDER ADAMS, OF SAME PLACE.

VLetters PatentNo. 76,094; dated March 31.; 1868..

IMPROVEMENT IN GAST-IRON (.iiiIMNliYS.

TO ALL WHOM IT MAY. CONCERN: i

-Be it knoivn that I, ARTHUR W. McMHLLEIN, of the citj,1 of Chicago, in Cook county, and State of Illinois, have invented certain' new and useful vImprovements in Cast-Iron Chimneys; andI do hereby declare that the followingv is 'a full, Clear, and exact description of thc'construction of the saine, reference being had to the accompanying drawings', making a part of this specification, in whieh- Figure-1 is an, elevation. i

Figureu, a vertical section.

Figure 3, a tcp'view of the guard.

Figure d, detail, showing the mode, of connecting the sections.

The natuze of my invention consists in forming an'iron chimney without'any seams or joints, except between the sections, in so connecting the joints that they are safe andjsecure without the use of cement,fand in several` devices and combinations herein .described and claimed.

To enable others skilled in the art to make and`use my invention, I proceed todescribe its construction.

The several parts 'ofmy chimney are made ofcast iron, cylindrical in form.

A B represent two sections of that part i' the chimney designed to be used within the building. They may be about two feet four inches long, and, for ordinaryuses, about eight inches in diameter, and about'oue-eighth of an inch thick. One end of each vsection is'made a trifle smaller .than the main portion thereof, as shown at c, g. 4, and also in fig. 2, while a corresponding portion of the other e'nd is somewhat enlarged within, so as to receive the s'malier part, c.oi` another section, as shown at'ithe junction of theseetions A. B,i:ig. 2. These pa1'1:s should bemade to ii't tightly, and a-re secured together by means of the pins or lugs a, and slot b.- `As shown in fig. 4, the lugs project on the inside of the's'ection, and the slot'b is cast 'in the smaller end thereof, so that when the two sections are brought together, and so turned as to bring thelngs a to their proper places, the outer y surface of the two will be perfectly smooth, and the slot b willA be covered. As many sections as may be desired canbe thus joined, and openings, d, for stove-pipes can be provided in the sections, when cast, at pleasure.

The loiver section may be lprovided with an opening, H, for the removal ofsoot, which may b'e closed by a door, h, either sliding or hinged; or the lower section, F, may be made so as tohe removed, and the opening can be dispensed with, if desired. This lower sectionjscast with a bottom. As shownj in the drawings, iig. 1, e, the lug is attached to the smaller part of the section, and the slot b placed in 'thelarger end. This forms a joint as secure as theother, being in. effect thesame, btdoes not present as iinished van appearance. l

I n the iioors' through which the chimneyis to pass, I place the guard G, the rim or dange, g, restingpn thev floor. Projecting inwards from the ilange are-three or more points,.f, andas no partofthe` guardexcept these points can'come in contact with the chimney, and as there will be a. constantci'roulationpi air' between the "chimney and the guard, perfect security is attained. This guard must .beadapted to the placewhereitis to be used. In use the guard willnol: be placed so near the opening d as shown in the drawings. O ntheroof of the building Isccurely fasten the base, C, of the exterior'portion of the chimney. Thelower portion of this base must be cast with reference to that part of the roof-on which'it is to be placed, an'd can be adapted to tit the peak oi` the roof, as shown, or the slope, or it can be used oma fiat roof. To this'base, C, I attach a section, D, by thense of lugs and slots as before, except that I pass this'sectio D over the base, C, so that the top-of the base is wholly within the section D, forming' a shoulder, on' which-the ange ofthe collar I may rest. Thissect'ion Drcsts on a shoulder, z'. in the base.. An ornamental flange can be cast on Athe `top of the section To the top of the chimney I attach la shield or'wind-br'eak,`E, by mea'nsofrodsj fastened thereto, and

inserted in holes provided in the ange k. It can beadjusted to any required'distauce from the top, and may j be secured by the 'use of nuts. The upper end ofthe section ofthe chimney which passes'intothe basa-C, is not enlarged within: i To this end I attach a collar,-I, which passes over the section, and is connected to it by means r of lugs and slots,'as beforedescribed On the top of' this' collar is a iiange, Z, which also extends inwards a distance equal-to the thickness of the section,

` IWhen the severalvpnrt's of the'chimney have been prepared as described, inputting them up for use, I first attach the base, C, `to tllebulding, and .then pass the upper section, marked A, in iig's. lA and 2, und having the I collar fastened thereto, as described, downV through Athe base, Theiiangcl of the collalrwill rest upon the top of-the baise, forming 'o perfectly tight joint; The section D is then attached to the buse, und, when in position, it prevents any lateral motion of the section A, the iitnge Z bein-g of such width as' to nicelyt the interior 'of the section D. Any desired number of sections B may then be oittnched below, and nufliy the soot-box F. The chimney iviil then be ready for useA I The chimneyl may be extended to. anydesired height, 'by uniting' the required number of sections in the some manner that A and B are joined together. Such'cxterior sections-being properly constructed, and provided with lugs and slots, and the [langes omitted frorn all 'buthtlie one designed for the top;y I deemit advisuble i0 usevfor catch joint tivo lugs, and corresponding slots, opposite each other. That portion of the' chimney within the base can be turned' around on the upper edgc'of tbe bose, bringing the opening'd et :tn-y desired position, thus often dispensing' with the duplication of elbows for the pipe.

My methodvrof connecting the interior and-exterior ports of the chimney by means of the collar I, as' described, produces 'ajoint withoutlsenm or opening t'hroughvwhic'u lsparks con come to the building,zind th'c point of connection being at o. consider-obl distance above the roof, where the chimney is constantly exposed to the external-air, it cannot become hot'and dangerous. The interidr of my chimney has o smooth unbroken surface from the bottom to the point of connection with, the bose, C. i

Having thus fully described myinvention, what I claim as nemend desire to seeure-by Letters Patent, is

1. The-cylindrical cost-iron chimney, constructed substantially asdescr-ibed v i 2; Constructingl :indA connecting thescvcrol sections B, substantially os described.

3. Connecting and supporting the section A with und upon the buse, C, by means of' the collar I, substnm.

tiully osspecified.` l p 4. Connecting the section-D with the bese, C, s'ubs'tnntiollyasfond for. the purposes specified.

5.' The soot-box F, with or without tbe opening H,.in combinatioufwith thesections A B and base, C, sub- 'stuntiallly as described. i

6. The. adjustable shieldor capE, in combinetionwitli thelsections A B Dt and base,.C. 7. The guard G, in combination with the sections A B and bose, C. y

. v ARTHUR W. MoMILLEN` Witnesses:

E. L. ANDIiESvs,

WEST. 

